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Javascript Introduction

JavaScript is a programming language that was first released in 1995.

Despite its name, JavaScript actually has nothing to do with the Java programming language.

JavaScript is the programming language of HTML and the Web.

JavaScript is easy to learn.

JavaScript has several notable features:

  • Javascript is a scripting language. JavaScript programs are scripts that are read and executed by an interpreter.
  • JavaScript's basic syntax and structure borrow heavily from C.
  • JavaScript differs from most object-oriented languages, though, in that its inheritance model is prototype-based rather than class-based.
  • JavaScript functions are objects and have their own properties and methods. The functions in Javascript can be passed into other functions as parameters or returned from other functions and assigned to variables.
  • JavaScript variables are not type-checked at interpretation time, and how operations occur between operands of mixed types depends on specific rules within JavaScript.
  • JavaScript is an implementation of the ECMA-262 standard.